Filling-valve for expansion-drums.



R. M. DIXON. FILLING VALVE r011 EXPANSION DRUMS. APPLICATION FILED JUNK 19,1907. 91 4,124. Patented Mar. 2, 1909.

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ROBERT M. DIXON, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO SAFETY CAR HEATING & LIGHTING COMPANY, A CORPORATION OF NEW JERSEY.

FILLING-VALVE FOR EXPANSION-DRUMS.

Specification of Letters Patent.

Patented March 2, 1909.

To all whom it may concern:

Be it known that 1, ROBERT M. DIXON, residing at East Orange, in the county of Essex and State of New Jersey, have invented certain new and useful improve ments in Filling Valves for Expansion- Drums, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to heating apparatus and more particularly to hot water heating apparatus adapted for heating railway cars or like structures.

One of the objects of the invention is to provide a new and improved filling valve for the expansion drums of a water circulating system.

Other objects will be in part obvious and in part pointed out hereinafter.

In the accompanying drawings, wherein is illustrated one of the various possible embodiments of my invention,l igure 1 is a vertical sectional view, taken through. a portion of the expansion drum of a heating sys tem, showing the same, and Fig. 2 is a vertical sectional view, taken substantially online aa Fig. 1, looking in the direction of the arrow.

Similar reference characters refer to similar parts in both views of the drawing.

Referring now to the drawing, wherein my invention is shown applied to a closed expansion drum of the type employed in water circulating systems of the Baker type,1 indicates a portion of such expansion drum into which is threaded a casing 2 which projects therein and has formed at its inner end a valve-seat 3, with which cooperates a valve 4 carried by a head 5 which is screw-threaded upon the inner end of a stem 6 and held fast thereon by means of a set screw 7. Stem 6, which extends longitudinally of easing 2, at its outer end, has threaded connection with a post 8 which extends without the casing 2 and is journaled in a cap-piece 9 threaded exteriorly of the outer end of the casing. An 0 erating handle or wheel 10 is fixed upon t e outer end of post 8 by means of a key or pin 11. Post 8 is provided within the casing with a flange 12 which takes against the end of the casing and cap-piece 9, thus preventing an endwise movement of the post when the same is rotated. It will be understood that a rotary movement of post 8 will,

through its connection with the stem 6, operate to carry valve 4 toward or from its seat, thereby establishing or closing communication between the casing and the drum. At this oint it maybe noted that stem 6 is providefl with webs, as at 21, which enter the discharge port of casing 2 and center the stem with respect thereto, said webs also cooperating with opposed webs 22 extending inwardly from the interior wall of the casing to prevent a rotation of stem 6 when post 8 is operated as above described.

Casing 2 has in its upper portion an inlet aperture 13 and beneath aperture 13 has a vent opening 14. Said casing in its lower portion is provided with a drip opening 15. A collar 16 surrounds casing 2 and is journaled thereon, said collar being held against longitudinal movement by means of its engagement with cap-piece 9 and a shoulder 17 formed u on the exterior of the casing. Collar 16 ms integrally mounted thereon a funnel 18, the discharge aperture of which, when the same is in upright position as shown in Fig. 1, being adapted to register with inlet aperture 13. Collar 16 is also provided with an opening 19 adapted to register with the vent opening 14 of the casing when the funnel is in uprigat position as shown in the above-mentioned figure. With the parts in this position collar 16 operates to close the drip opening 15 located in the lower portion of the casing. A vent 20 is provided in the upper portion of the casing the purpose of which will be apparent hereinafter.

Having thus described the construction of this embodiment of my invention, the operation, which should be to a large extent obvious, is substantially as follows: In Fig. 1 of the drawings the funnel is shown in the upright or filling position, the discharge opening thereof being in registry with the inlet opening of the casing, and the lateral opening 19 of the collar being in registry with the vent 14 of the casing. With the parts in this position, post 8 is rotated by means of handle 10, whereby stem 6 will be caused to carry valve 4 from its seat. The valve being open, communication is established between the casing and the drum, whereupon water poured through the funnel 18 will enter the drum, the dripping of water through vent 14 indicating when the desired level of the water Within the system has been secured, vent 14 being so disposed with respect to the drum -that t that when the water level'within the drum reaches a redetermined point, the water will drip t erethrough. The drum being filled to the desired level, valve 4 is then forced against its seat and funnel 18 turned to the position indicated in Fig. 2, in which position collar 16 will operate as a valve to close the inlet opening 13 of the casing and vent 14 thereof. Water remaining in the casing will then be discharged through dri opening 15, said water being displaced by air entering through vent 20 provided in the up er portion of the casing.

t will accordingly be seen that I have provided a construction well adapted to attain, among others, the above objects and ends of my invention in an exceedingly simple and efficient manner. The device being constructed by comparatively few parts is durable and can be manufactured at acomparatively small cost.

As many changes could be made in the above construction and many a parently widely different embodiments of t is invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limitin sense. It is also to be understood fie langua e used in the following claims is intende to cover all of the generic and specific features of the invention herein which, as a matter of language, might be said to fall therebetween.

Having described my invention, what I claim as new and desire to secure by Letters Patent is 1. The combination with an ex ansion drum, of a casing connected therewith and having an inlet aperture in its upper portion and a drip aperture in its lower portion, a funnel journaled exteriorly of said casing, the discharge opening of which registers with said inlet aperture of the casin when the funnel is in an erect position, said funnel when rotated to a depending position being adapted to close said inlet aperture and open said drip alperture.

2. n a device of the class described, the combination with an expansion drum, of a filling device therefor comprising a casing threaded into said drum, a valve for establishing and closing communication between said drum and said casing, said casing being provided with an inlet aperture in its upper portion and a drip aperture in its lower ortion, a funnel provided with a collar w ich surrounds said casing and is revolubly mounted thereon, said funnel when in erect position having its discharge opening registering with the inlet opening of said casing and said collar when the funnel is in such erect position being adapted to close said drip aperture, and a stem extending longitudinally of said casing and connected with said valve.

8. In a device of the class described, the combination with an expansion drum, of a filling device therefor comprising a casing threaded into said drum and having an inlet opening in its upper portion, a valve seat upon the inner portion of said casing within said drum, a valve stem extending longitudinally of said casing, a valve mounted upon the inner end of said stem and cooperating with said seat, an apertured collar journaled exteriorly of said casing, and a funnel carried by said collar and adapted when in erect position to register with the inlet opening of said casing, said casing having a drip opening in its lower portion which is closed by said collar when the funnel is in such erect position, said collar being adapted to be turned to carry the funnel to a downward position, whereby said inlet aperture will be closed and the discharge opening of the funnel carried into registry with said drip opening.

4:. In a device of the classdescribed, the combination with an expansion drum, of a filling device therefor comprising a casing threaded into said drum having in its upper portion an inlet opening, in its lateral portlon a vent opening and in its lower portion a drip opening, a collar located exteriorly of said casing, a funnel carried by said collar the discharge opening of which when the funnel is in an erect position registers with the inlet opening of said casing, said collar having an aperture which, when. the funnel is in such position, registers with the vent opening of the casing, said collar also operating, when the funnel is in such position, to close the drip opening thereof, a valve-seat provided upon t e inner end of said casing, a valve cooperating therewith, and a valve-stem extending longitudinally with said casing and connected with said valve.

5. In a device of the class described, the combination with an expansion drum, of a filling device therefor comprising a casing threaded into said drum, said casing having in its upper portion an inlet opening, in its lateral portion a vent opening and in its lower portion a drip opening, a collar journaled exteriorly of said casing and carrying a funnel the aperture of which, when the funnel is in an erect position, registers with the inlet opening of said casing, said collar also having an opening which, when the funnel is in such position, registers with the vent opening of said casing, a valve-seat provided upon the inner end of said casing, a valve adapted to cooperate therewith, a valve-stem connected with said valve, a post threaded upon the opposite end of said valve stem and extending without said casing, and means within the casing for preventing a rotative movement of said stem during the opening and closing movements of the valve due to a rotation of said post, said collar, when the funnel is turned to a downward position, being adapted to close the inlet and vent openings of said casing and open the drip opening in the lower portion of the casing, whereby said casing will be drained.

6. In a device of the class described, the combination with an expansion drum, of a filling device therefor comprising a casing threaded into said drum having an inlet opening in its upper portion, a vent opening in its intermediate portion and a drip opening in its lower portion, a collar journaled exteriorly of said casing having apertures which, when the collar is in a pre-determined position, register with the inlet and vent o enings of said casing, said collar operating w ien in such position to close the drip opening thereof, a funnel carried by said collar and having its discharge aperture registering with one of the openings of said collar, said collar being adapted when rotated to carry the funnel to a downward position to close the inlet and vent openings of said casing and open the drip opening thereof, a valve-seat located upon the inner end of said casing, a valve cooperating therewith, a stem connected with said valve and extending longitudinally of said casing, a post threaded upon said stem and extending without said casing, said casing having inwardly extending projections which cooperate with projections provided upon said stem to prevent a rota tion of said stem when the post is rotated to cause the stem to open and close said valve, and an operating handle provided upon the outer end of said post, said casing also having a vent opening in its upper portion for ad: mitting air to the casing when the funnel is in a downward position, whereby said casing may be drained.

In testimony whereof I a'ffix my signature, in the presence of two witnesses.

ROBERT M. DIXON.

Witnesses:

G. R. JEWETT, E. E. ALLBEE. 

